Created attachment 160264 [details] image of jagged lines SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** The longer a line is held down using a drawing tablet, the more frayed the line seems to become. Using a Huion Inspiroy H610PROV2. Works fine on Gimp / Xournal++. STEPS TO REPRODUCE 1. Open any pdf on okular (on windows) 2. Draw a line using the freehand line tool (alt + 8) OBSERVED RESULT See image EXPECTED RESULT smooth lines and circles SOFTWARE/OS VERSIONS Windows: Windows 11 22H2, Build 22621.1992 KDE Plasma Version: n/a (?) KDE Frameworks Version: n/a (?) Qt Version: unsure (where do I find this) ADDITIONAL INFORMATION
I can reproduce this issue in both Windows 10 and Windows 11 using a Wacom Intuos tablet (with the latest driver). Interestingly, the same issue does not exist when using the Linux (Ubuntu) version of Okular. I suspect this is a platform-specific issue. Related: - https://bugs.kde.org/show_bug.cgi?id=410723 - https://stackoverflow.com/q/31172532
I can reproduce this issue as well. I use Windows 11 on a Samsung Galaxy Book Pro 360 with a Samsung Pen. Samsung uses Wacom tech and drivers, so the nature of the issue is similar to those with drawing tablets.
Related: Bug 437401